Firefox add-on with keyword - calendar
Add-ons (also known as extensions) are small programs that run inside web browsers like Mozilla Firefox. They add extra features to the browser without having to download anything new. You can use extensions to make browsing faster, easier, and safer. Some extensions even let you do things like translate text on websites, search the web, and play games.
There are over 28,000 Firefox-addons and 480,000 themes, making it hard to find the best ones. so we have created a way to sort through all of them. Use the dropdown above to set different filters. Add-ons are sorted by number of active users.
To set even more advanced filters, and sort the Firefox add-ons differently, please visit our Advanced search tool. Note that Advanced search tool is only available to premium members.
![Pinned Google Calendar](https://addons.mozilla.org/user-media/addon_icons/363/363973-64.png?modified=42a61d66)
#1, Pinned Google Calendar
![Pinned Google Calendar](https://addons.mozilla.org/user-media/addon_icons/363/363973-64.png?modified=42a61d66)
#2, Calendar
![Calendar Planner & Custom Web Search](https://addons.mozilla.org/user-media/addon_icons/2816/2816586-64.png?modified=7bc5fdce)
#3, Calendar Planner & Custom Web Search
![Calendar Planner & Custom Web Search](https://addons.mozilla.org/user-media/addon_icons/2816/2816586-64.png?modified=7bc5fdce)
![Checker Plus for Google Calendar™](https://addons.mozilla.org/user-media/addon_icons/739/739662-64.png?modified=1615814828)
#4, Checker Plus for Google Calendar™
![Checker Plus for Google Calendar™](https://addons.mozilla.org/user-media/addon_icons/739/739662-64.png?modified=1615814828)
![Open Google Calendar with toolbar button](https://addons.mozilla.org/user-media/addon_icons/306/306389-64.png?modified=1506028821)
#5, Open Google Calendar with toolbar button
![Open Google Calendar with toolbar button](https://addons.mozilla.org/user-media/addon_icons/306/306389-64.png?modified=1506028821)
![Clockwise: AI Calendar & Scheduling Assistant](https://addons.mozilla.org/user-media/addon_icons/2713/2713081-64.png?modified=fddbb896)
#6, Clockwise: AI Calendar & Scheduling Assistant
![Clockwise: AI Calendar & Scheduling Assistant](https://addons.mozilla.org/user-media/addon_icons/2713/2713081-64.png?modified=fddbb896)
![Google Calendar (Pin Tab)](https://addons.mozilla.org/user-media/addon_icons/882/882040-64.png?modified=1568654071)
#7, Google Calendar (Pin Tab)
![Google Calendar (Pin Tab)](https://addons.mozilla.org/user-media/addon_icons/882/882040-64.png?modified=1568654071)
![Tags for Google Calendar™](https://addons.mozilla.org/user-media/addon_icons/2660/2660406-64.png?modified=bf525819)
#8, Tags for Google Calendar™
![Tags for Google Calendar™](https://addons.mozilla.org/user-media/addon_icons/2660/2660406-64.png?modified=bf525819)
![Release Calendar Filter for Crunchyroll](https://addons.mozilla.org/user-media/addon_icons/2753/2753361-64.png?modified=64c80877)
#9, Release Calendar Filter for Crunchyroll
![Release Calendar Filter for Crunchyroll](https://addons.mozilla.org/user-media/addon_icons/2753/2753361-64.png?modified=64c80877)
![Google Calendar™ on new Tab](https://addons.mozilla.org/user-media/addon_icons/1485/1485085-64.png?modified=ae1a415c)
#10, Google Calendar™ on new Tab
![Google Calendar™ on new Tab](https://addons.mozilla.org/user-media/addon_icons/1485/1485085-64.png?modified=ae1a415c)
![Toggl Plan: Project Planning Calendar](https://addons.mozilla.org/user-media/addon_icons/983/983739-64.png?modified=32629cea)
#11, Toggl Plan: Project Planning Calendar
![Toggl Plan: Project Planning Calendar](https://addons.mozilla.org/user-media/addon_icons/983/983739-64.png?modified=32629cea)
![Google Calendar Scroll Disabler](https://addons.mozilla.org/user-media/addon_icons/968/968068-64.png?modified=ec42cb6b)
#12, Google Calendar Scroll Disabler
![Google Calendar Scroll Disabler](https://addons.mozilla.org/user-media/addon_icons/968/968068-64.png?modified=ec42cb6b)
![Picasso: Google Calendar theme](https://addons.mozilla.org/user-media/addon_icons/769/769380-64.png?modified=1485422421)
#13, Picasso: Google Calendar theme
![Picasso: Google Calendar theme](https://addons.mozilla.org/user-media/addon_icons/769/769380-64.png?modified=1485422421)
![Create a Google Calendar Event™](https://addons.mozilla.org/user-media/addon_icons/2695/2695969-64.png?modified=a72b1dca)
#14, Create a Google Calendar Event™
![Create a Google Calendar Event™](https://addons.mozilla.org/user-media/addon_icons/2695/2695969-64.png?modified=a72b1dca)
![Outlook Calendar button](https://addons.mozilla.org/user-media/addon_icons/2789/2789561-64.png?modified=f1a59c6d)
#15, Outlook Calendar button
![Outlook Calendar button](https://addons.mozilla.org/user-media/addon_icons/2789/2789561-64.png?modified=f1a59c6d)
![Notion - Add to calendar](https://addons.mozilla.org/user-media/addon_icons/2720/2720674-64.png?modified=242973a3)
#16, Notion - Add to calendar
![Notion - Add to calendar](https://addons.mozilla.org/user-media/addon_icons/2720/2720674-64.png?modified=242973a3)
![UBC Workday Calendar](https://addons.mozilla.org/user-media/addon_icons/2849/2849967-64.png?modified=a27ad73d)
#17, UBC Workday Calendar
![UBC Workday Calendar](https://addons.mozilla.org/user-media/addon_icons/2849/2849967-64.png?modified=a27ad73d)
![linkchat Calendar Add-on](https://addons.mozilla.org/user-media/addon_icons/673/673864-64.png?modified=1512647945)
#18, linkchat Calendar Add-on
![linkchat Calendar Add-on](https://addons.mozilla.org/user-media/addon_icons/673/673864-64.png?modified=1512647945)
![Kalendario for Google Calendar™](https://addons.mozilla.org/user-media/addon_icons/2604/2604493-64.png?modified=e4b6b86f)
#19, Kalendario for Google Calendar™
![Kalendario for Google Calendar™](https://addons.mozilla.org/user-media/addon_icons/2604/2604493-64.png?modified=e4b6b86f)
![Calendar Clarity](https://addons.mozilla.org/user-media/addon_icons/944/944755-64.png?modified=eda8915c)
#20, Calendar Clarity
![Calendar Clarity](https://addons.mozilla.org/user-media/addon_icons/944/944755-64.png?modified=eda8915c)
![Event Regist helper on google calendar.](https://addons.mozilla.org/user-media/addon_icons/926/926873-64.png?modified=1537162147)
#21, Event Regist helper on google calendar.
![Event Regist helper on google calendar.](https://addons.mozilla.org/user-media/addon_icons/926/926873-64.png?modified=1537162147)
![Astronomy Calendar for celestial events](https://addons.mozilla.org/user-media/addon_icons/2682/2682292-64.png?modified=94dc20b3)
#22, Astronomy Calendar for celestial events
![Astronomy Calendar for celestial events](https://addons.mozilla.org/user-media/addon_icons/2682/2682292-64.png?modified=94dc20b3)
![Confluence Meeting Notes for Google Calendar](https://addons.mozilla.org/user-media/addon_icons/2690/2690845-64.png?modified=a86cb214)
#23, Confluence Meeting Notes for Google Calendar
![Confluence Meeting Notes for Google Calendar](https://addons.mozilla.org/user-media/addon_icons/2690/2690845-64.png?modified=a86cb214)
![Nepali Patro (Calendar)](https://addons.mozilla.org/user-media/addon_icons/2710/2710643-64.png?modified=8989354a)
#24, Nepali Patro (Calendar)
![Nepali Patro (Calendar)](https://addons.mozilla.org/user-media/addon_icons/2710/2710643-64.png?modified=8989354a)
![Reminderly For Google Calendar](https://addons.mozilla.org/user-media/addon_icons/2591/2591678-64.png?modified=a9eaba13)
#25, Reminderly For Google Calendar
![Reminderly For Google Calendar](https://addons.mozilla.org/user-media/addon_icons/2591/2591678-64.png?modified=a9eaba13)